Yeah, okay...what causes these?

I don't have black algae. There is nothing black anywhere else at all in the entire pool. But there are these two black water-level...

Don't ask how, it's a long story.

Anyways I have this small 2x3 foot cinder block sitting at the bottom of my pool. When I uncovered the pool in the spring, I have a...

if colorine is high can I still add calcium hardness?

I have 2 returns on my inground pool. I've isolated the furthest one because when I turn the valve for that one the water flow drops dramaticly. Right now I'm not using...

I see the pool in hotel . The pool bottem growtting was black colour.It sticky and oiley and can't removed this problem was coming last 6month. when the use TICA tabs it...

I have a 33ft above grnd pool / 25,000 gal H2O. Didn't cover over the winter (live in the south) and started season with clear water with some leaves and debris on...

I have an inground vinyl liner 25,000gal pool with a salt water chlorinator. I did not cover my pool over the winter and it is green. I removed several frogs and...

hi. just took pool cover off. bottom of pool has green algae. pool is above-ground, 25ft round. water level is below filter---pool is about 1/4 full. so if i do the...

Is there a product I can buy that will clump up all the fine dirt and debris that my filter wont catch? Does water clarifiers work? And how do I get rid of the milky...

My water was a dark green. I shocked it with 8 gallons of shock. My water is now bluish white. I cant see past 4 inches down. My main concern is there is so many...

Hi there

pleasE help....

Took cover off to inground pool and it is really green. Put vacuum in pool and let it bounce around picking all leaves and rubbish off bottom,...

I moved into a house over the winter with an above ground pool. The real estate agent didn't make mention of the fact that the pool wasn't closed properly last fall......

Hi, I am considering getting either an electronic ion (copper/silver) system or an alterntive ion type system (called the "Frog"). Has anyone had any...

I am haveproblems i think i am getting taken to the bank because the chemicals arentworking. i got a sample of the water and the results are: saturation index: 0.61...

I have had my pool and house less than a year and my husband is ready to make it a cement garden. We have had a beautiful clear blue pool until summer. Then overnight...

I have what I believe to be is black algea. I have a concrete pool. There are black dots on the walls and floors in various places in the pool. They will not vacuum up...

i have a question here- got a little noticable green algae in bottom of pool. now i wake up this morning and seems like there is a film starting on top of water. the...

We opened our 16 x28 inground pool and it was a green swamp!!!

Added bottle of algaecide, vacuumed & cleaned out filter cartridges several times over past week....

I have started to see a couple of products coming on the market that purport to kill algae by using sonic waves. Apparently algae (but not humans) are suscetible to...

When Spring began and the weather began to get warmer, the walls of my in-ground gunite pool began to get green algae. First I shocked the pool, and it disappeared, then...